batgrbproduct analysis for trigger=1105560

batgrbproduct Analysis for Trigger=1105560

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
4) This page will be updated for up to 15 downlinks after the trigger.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sat May  7 13:00:14 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1105560/GCN5_download_cron
======================================================================

  Trigger: 01105560      Segment: 000

  BAT Trigger Time: 673531768   [s; MET]
      Trigger Stop: 673531832   [s; MET]
               UTC: 2022-05-06T12:08:58.910380    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 300.062982027018   Dec: 34.9062820143068  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.32
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    10.32

  Flight Position:   [ source = BAT ]
    RA: 300.062982027018   Dec: 34.9062820143068  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 300.10392814119   Dec: 34.8949679045289  [deg; J2000]  
        { 20h 00m 24.9s , +34d 53' 41.9" }
         +/- 7.26821476643427 [arcmin] (estimated 90% radius based on SNR)
         +/- 5.60431792511693 [arcmin] (formal 1-sigma fit error)
    SNR: 1.78857561820523
 
  Angular difference between Flight and Ground position is 2.126189 arcmin
 
  Partial Coding Fraction: 0.2441406    [ including projection effects ]

  Duration
     T90: 230.155999898911 +/- 54.3565144821347
        Measured from: 26.2480001449585
                   to: 256.404000043869     [s; relative to TRIGTIME]
     T50: 132.231999874115 +/- 67.8328704734175
        Measured from: 57.2760001420975
                   to: 189.508000016212     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 73.7319999933243     
                   to: 74.7319999933243     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 23.5160000324249     
                   to: 266.332000017166     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.604813   4.289925   3.108098   0.459929
           0.155246   0.158912   0.137362   0.114455 [error]
 Peak      0.028015   0.058150   0.059176  -0.000553
           0.015050   0.015797   0.014012   0.012053 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 1.52e-06 2.17e-06 2.31e-06 4.57e-06 7.43e-06 1.06e-05   erg/cm2
              Error 1.13e-07 9.79e-08 1.39e-07 5.81e-07 3.35e-07 6.94e-07   erg/cm2
Peak flux Power-law 5.30e-01 4.59e-01 2.72e-01 2.42e-01 1.37e+00 1.50e+00   ph/cm2/s
              Error 2.54e-01 1.49e-01 1.08e-01 1.85e-01 4.41e-01 4.70e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.34e-06 2.28e-06 2.41e-06 2.19e-06 7.16e-06 8.22e-06   erg/cm2
              Error 1.42e-07 1.16e-07 1.56e-07 8.35e-07 3.65e-07 9.09e-07   erg/cm2
Peak flux Cutoff-PL 3.14e-01 5.65e-01 3.24e-01 3.79e-02 1.24e+00 1.24e+00   ph/cm2/s
              Error 2.93e-01 1.98e-01 1.48e-01 1.17e-01 4.53e-01 4.62e-01   ph/cm2/s
 
Fluence        Band 1.33e-06 2.27e-06 2.40e-06 2.24e-06 7.16e-06 8.29e-06   erg/cm2
              Error 1.30e-07 1.09e-07 -------- -------- -------- --------   erg/cm2
Peak flux      Band 3.18e-01 5.62e-01 3.26e-01 3.90e-02 1.25e+00 1.26e+00   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.909    0.079    -      -           3.33e-03 1.52e-04   53.870 57
CPL   1.294    0.346      58.7   10.7      6.68e-03 2.66e-03   43.380 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.756    0.504    -      -           1.01e-02 3.31e-03   53.110 57
CPL  -0.988    4.064      53.6   51.8      2.39e-01 4.56e+01   49.980 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom

 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  242.816   23.516  266.332
T90   230.156   26.248  256.404
T50   132.232   57.276  189.508
Peak    1.000   73.732   74.732

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  300.1039 +34.8950 0.1079   51.4  -12.4       0.5024     1.8  TRIG_01105560       
------------------------------------------
 
Foreground time interval of the image:
 23.516  71.401 (delta_t =  47.885 [sec])
Background time interval of the image:
-17.599  23.516 (delta_t =  41.115 [sec])

Lightcurves

Notes:

1) All plots contain as much data as has been downloaded to date.
2) The mask-weighted light curves are using the flight position.
3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
4) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
5) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
6) Time of each bin is in the middle of the bin.

1 s binning

From T0-310 s to T0+310 s

From T100_start - 20 s to T100_end + 30 s

Full time interval

64 ms binning

Full time interval

From T100_start to T100_end

From T0-5 sec to T0+5 sec

16 ms binning

From T100_start-5 s to T100_start+5 s

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

1) The fitting includes the systematic errors.
2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.

Time averaged spectrum fit using the pre-slew DRM

Power-law model

Multiple GTIs in the spectrum
tstart tstop
23.516000 134.407700
135.000000 266.332000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.90930     ( -0.0785318   0.079686 )
Norm@50keV  : 3.33481E-03    ( -0.000151941   0.000151356 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.87 using 59 PHA bins.
# Reduced chi-squared =         0.9451 for     57 degrees of freedom 
# Null hypothesis probability =   5.932746e-01
 
Photon flux (15-150 keV)    in 242.2 sec: 0.480481 ( -0.0227315  0.022823 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.42638e-06 ( -3.35093e-07  3.35711e-07 ) ergs/cm2

Cutoff power-law model

Multiple GTIs in the spectrum
tstart tstop
23.516000 134.407700
135.000000 266.332000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29366     ( -0.359077   0.333682 )
Epeak [keV] : 58.6556      ( -7.73914 13.7223 )
Norm@50keV  : 6.68370E-03    ( -0.0020563   0.0032578 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.38 using 59 PHA bins.
# Reduced chi-squared =         0.7746 for     56 degrees of freedom 
# Null hypothesis probability =   8.910529e-01
 
Photon flux (15-150 keV)    in 242.2 sec: 0.460686 ( -0.024726  0.024858 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.16205e-06 ( -3.65238e-07  3.65116e-07 ) ergs/cm2

Band function

Multiple GTIs in the spectrum
tstart tstop
23.516000 134.407700
135.000000 266.332000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.29361   ( -0.302787   0.342069 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 58.6427      ( -7.73792 13.7235 )
Norm@50keV   : 6.68331E-03    ( -0.00205539   0.00325654 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.38 using 59 PHA bins.
# Reduced chi-squared =         0.7887 for     55 degrees of freedom 
# Null hypothesis probability =   8.713458e-01
 
Photon flux (15-150 keV)    in 242.2 sec: 0.441183 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.16234e-06 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.3590  (  )
R^2/D10^2   : 7.38316E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         144.17 using 59 PHA bins.
# Reduced chi-squared =         2.5294 for     57 degrees of freedom 
# Null hypothesis probability =   1.692566e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.763e-07   5.728e-08
25- 50  2.398e-06   1.258e-07
50-150  2.748e-06   2.277e-07
15-150  5.822e-06   2.810e-07

Thermal bremsstrahlung (OTTB)

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 92.5640       (-12.3506      15.576)
Norm        : 2.12176       (-0.142098     0.154084)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.342e-06   1.173e-07
25- 50  2.283e-06   1.016e-07
50-150  3.537e-06   9.191e-07
15-150  7.162e-06   9.010e-07

Double BB

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.08710        (-0.864692      1.0603)
R1^2/D10^2  : 1.73881        (-0.925478      2.26903)
kT2 [keV]   : 18.2242        (-1.62764      2.16231)
R2^2/D10^2  : 1.88951E-02    (-0.00724906   0.00918715)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.400e-06   3.420e-07
25- 50  2.162e-06   2.725e-07
50-150  3.454e-06   3.669e-07
15-150  7.016e-06   7.218e-07

Peak spectrum fit

Power-law model

Time interval is from   73.732 sec. to   74.732 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75570     ( -0.482386   0.52514 )
Norm@50keV  : 1.00821E-02    ( -0.00333746   0.00328058 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.11 using 59 PHA bins.
# Reduced chi-squared =         0.9318 for     57 degrees of freedom 
# Null hypothesis probability =   6.216175e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.36598 ( -0.439146  0.443173 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.30146e-08 ( -3.08736e-08  3.1482e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   73.732 sec. to   74.732 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.988273     ( -5.45547   2.67184 )
Epeak [keV] : 53.6029      ( -14.8224 88.7908 )
Norm@50keV  : 0.239261    ( -0.252706   90.8576 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
# Reduced chi-squared =         0.8925 for     56 degrees of freedom 
# Null hypothesis probability =   7.009033e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.23749 ( -0.445212  0.46085 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.38794e-08 ( -2.87553e-08  3.20676e-08 ) ergs/cm2

Band function

Time interval is from   73.732 sec. to   74.732 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.883001   ( -2.69815   -0.883052 )
beta        : -9.37167    ( 9.37167   19.3716 )
Epeak [keV] : 54.1063      ( -14.7188 75.9782 )
Norm@50keV   : 0.207106    ( -0.212528   341.662 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.00 using 59 PHA bins.
# Reduced chi-squared =         0.9091 for     55 degrees of freedom 
# Null hypothesis probability =   6.656341e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.24521 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.39386e-08 ( 0  0 ) ergs/cm2

Single BB

 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.6520  (-3.35694  4.45168)
R^2/D10^2   : 0.229602  (-0.229602   0.41461)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.058e-09   5.785e-09
25- 50  3.284e-08   1.973e-08
50-150  3.978e-08   2.478e-08
15-150  8.168e-08   4.991e-08

Thermal bremsstrahlung (OTTB)

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 110.222       (-62.4313      -107.892)
Norm        : 5.97916       (-2.12394     3.18557)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.561e-08   9.650e-09
25- 50  2.751e-08   1.642e-08
50-150  4.702e-08   3.535e-08
15-150  9.014e-08   5.915e-08

Double BB

XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 0.386963        (-2.57942      36.8254)
R1^2/D10^2  : 4.35395E+14        (-4.59333e+14      3.30742e+20)
kT2 [keV]   : 13.8476        (-3.40412      4.55533)
R2^2/D10^2  : 0.215546    (-0.143567   0.345942)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.126e-08   5.930e-09
25- 50  3.157e-08   1.871e-08
50-150  4.098e-08   2.578e-08
15-150  8.381e-08   5.020e-08

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.62230     ( -0.23813   0.242082 )
Norm@50keV  : 3.31242E-03    ( -0.000477142   0.000475212 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.34 using 59 PHA bins.
# Reduced chi-squared =         0.8481 for     57 degrees of freedom 
# Null hypothesis probability =   7.859955e-01
 
Photon flux (15-150 keV)    in 47.88 sec: 0.428653 ( -0.0643564  0.0647087 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.47937e-06 ( -2.22016e-07  2.23177e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09708     ( -1.07173   0.665133 )
Epeak [keV] : 91.1964      ( -40.8873 -91.1962 )
Norm@50keV  : 5.94689E-03    ( -0.00190301   0.0127645 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.34 using 59 PHA bins.
# Reduced chi-squared =         0.8454 for     56 degrees of freedom 
# Null hypothesis probability =   7.882756e-01
 
Photon flux (15-150 keV)    in 47.88 sec: 0.418828 ( -0.066562  0.066774 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.4485e-06 ( -2.30571e-07  1.17215e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.09746   ( -0.662786   0.972525 )
beta        : -10.0000    ( 10   7.10543e-15 )
Epeak [keV] : 91.2129      ( -33.6657 -91.2129 )
Norm@50keV   : 5.94375E-03    ( -0.00300402   0.0127322 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.34 using 59 PHA bins.
# Reduced chi-squared =         0.8608 for     55 degrees of freedom 
# Null hypothesis probability =   7.588254e-01
 
Photon flux (15-150 keV)    in 47.88 sec: 0.417077 ( 6.58292  -0.060129 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.46789e-06 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 2.17e-06
S(50-100 keV) = 2.31e-06

T90 vs. Hardness ratio plot

T90                                   = 230.155999898911 sec.
Hardness ratio (energy fluence ratio) = 1.06452

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.19005
Count Ratio (50-100 keV) / (15-25 keV) = 0.862208

Mask shadow pattern

IMX = 1.224864420800132E+00, IMY = 2.700566933999252E-01

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

Spacecraft aspect plot

Bright source in the pre-burst/pre-slew/post-slew images

Pre-burst image of 15-350 keV band

Time interval of the image:
-17.599400 23.516000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4612  35.3444  120.6  27.1   34.4  -0.0107  -0.1    0.2	Her X-1                       
299.6844  35.2705    7.6  50.9  -12.4  -0.2917  -1.5    6.2	Cyg X-1                       
307.9663  40.9677    4.9  51.3  -23.5  -0.5541  -2.4    6.6	Cyg X-3                       
224.2977  34.1606    3.2  22.4   95.0   0.3912   3.6 ------	UNKNOWN                       
300.0582  34.8951    1.4  51.4  -12.4   1.6128   8.1 ------	UNKNOWN                       
233.5230  78.4153    1.9  22.2  -93.0   0.6203   6.1 ------	UNKNOWN                       
130.0666  46.4161    2.4  57.1 -149.5   2.4068   4.9 ------	UNKNOWN

Pre-slew background subtracted image of 15-350 keV band

Time interval of the image:
23.516000 71.400600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.2129  35.2695    0.0  27.1   34.9  -0.2656  -1.8   12.8	Her X-1                       
299.6751  35.2881    6.0  50.9  -12.4   0.5218   1.9    6.7	Cyg X-1                       
308.0519  41.0271    5.3  51.3  -23.7   0.6863   2.2    5.2	Cyg X-3

Post-slew image of 15-350 keV band

Time interval of the image:
168.300590 303.071100
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.6154  35.4102    5.2  36.8  125.7   1.2846   2.2    8.7	Her X-1                       
288.7336  10.7649    0.0  26.2   47.3  -0.1216  -0.4   11.5	GRS 1915+105                  
299.8284  35.1174    0.0   0.3  161.4   0.7742   3.7   12.7	Cyg X-1                       
308.3001  40.9958    6.6   8.9 -114.3   0.3550   1.8    9.0	Cyg X-3                       
326.0494  38.3996    3.8  21.1  -85.8  -0.7496  -3.1    7.4	Cyg X-2                       
257.4787  30.6155    2.4  35.8  116.8   2.6080   4.8 ------	UNKNOWN                       
322.8005   1.5343    2.3  39.5  -16.0   1.5950   5.1 ------	UNKNOWN                       
338.3732  35.7308    2.7  31.1  -81.4   1.3606   4.3 ------	UNKNOWN

Plot creation:
Sat May  7 13:03:02 EDT 2022