IRS Form Data File Naming Convention
Its confusing!
The Form Data file name looks like the following:
1094<form_type>_Request_<TCC>_<Date>T<TimeStamp>.xml
where,
<form_type> is either B or C for Form 1095-B or Form 1095-C.
<TCC> is the 5-character transmitter control code issued by the IRS.
<Date> is today’s date formatted as YYYYMMDD.
<TimeStamp> is formatted in ISO 8601 with the – removed.
To be more specific, the date and time stamp combined is
YYYY-MM-DDThh:mm:ss.sTZD
where
YYYY = four-digit year
MM = two-digit month (01=January, etc.)
DD = two-digit day of month (01 through 31)
hh = two digits of hour (00 through 23) (am/pm NOT allowed)
mm = two digits of minute (00 through 59)
ss = two digits of second (00 through 59)
s = one or more digits representing a decimal fraction of a second
TZD = time zone designator (Z or +hh:mm or -hh:mm)
Here’s an example:
2015-08-23T18:15:31.481Z => 18:15:31 and 481 miliseconds in UTC (Z)
The IRS example is: 010102000Z is 01:01:02 and 000 miliseconds in UTC (Z).
In this case, the -,:,. have been removed, since you can’t have some of these characters in a filename.
by 
Erich J. Ruth
Erich J. Ruth provides technical support for National Software which is the parent company for 1099FIRE. 1099FIRE develops and markets a comprehensive range of products that enables any size of business or institution to effectively manage and comply with year-end filing requirements. 1099FIRE is an employee-owned company located in Phoenix, Arizona.
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