SimCom SIM5300E At Command Manual page 103

Reference
SIM5300E AT Command Manual V1.02
<mnc> String type; mobile network code
<full network name> String type; name of the network in full length.
<full network name CI> Integer type; indicates whether to add CI.
0 The MS will not add the initial letters of the Country's Name to
the text string.
1 The MS will add the initial letters of the Country's Name and a
separator (e.g. a space) to the text string.
<short network name> String type; abbreviated name of the network
<short network name CI> Integer type; indicates whether to add CI.
0 The MS will not add the initial letters of the Country's Name to
the text string.
1 The MS will add the initial letters of the Country's Name and a
separator (e.g. a space) to the text string.
<year> 4 digits of year (from network)
<month> Month (from network)
<day> Day (from network)
<hour> Hour (from network)
<min> Minute (from network)
<sec> Second (from network)
<time zone> String type; network time zone. If the network time zone has
been adjusted for Daylight Saving Time, the network shall indicate this by
including the <dst> (Network Daylight Saving Time)
<dst> Network Daylight Saving Time; the content of this indicates the value
that used to adjust the network time zone
0 No adjustment for Daylight Saving Time
1 +1 hour adjustment for Daylight Saving
2 +2 hours adjustment for Daylight Saving Time
3 Reserved
Note:
Support for this Command will be network dependent.
Set AT+CLTS=1, it means user can receive network time updating
and use AT+CCLK to show current time.
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