UnixTime2HTTPDate

@Echo Off
SetLocal EnableDelayedExpansion
:: Unix timestamp to HTTP date format (RFC 1123)
:: Dependencies: sqlite

If "%~1"=="" (Echo USAGE: %~nx0 unix timestamp & Exit /B)

Set Day[]= 0:Sun, 1:Mon, 2:Tue, 3:Wed, 4:Thu, 5:Fri, 6:Sat
Set Month[]= 01:Jan, 02:Feb, 03:Mar, 04:Apr, 05:May, 06:Jun, 07:Jul, 08:Aug, 09:Sep, 10:Oct, 11:Nov, 12:Dec

Set "DayName=" & Set "MonthName="
For /F "eol= tokens=1-4 delims=\" %%A In ('Echo SELECT strftime^(^'%%w\%%d\%%m\%%Y %%H:%%M:%%S GMT^'^, %~1^, ^'unixepoch^'^)^;^|sqlite3') Do (
    For %%Q In (%Day[]%) Do (For /F "tokens=1,2 delims=:" %%R In ("%%Q") Do (If "%%A"=="%%R" Set DayName=%%S))
    For %%Q In (%Month[]%) Do (For /F "tokens=1,2 delims=:" %%R In ("%%Q") Do (If "%%C"=="%%R" Set MonthName=%%S))
    <nul Set /P "Echo=!DayName!, %%B !MonthName! %%D"
)
EndLocal
Exit /B