How about Friday, Sept. 17, at 9 am (Houston time) which is 11 am (Sao Paulo) time?
1	How	how	ADV	WRB	PronType=Int	0	root	0:root	_
2	about	about	ADP	IN	_	3	case	3:case	_
3	Friday	Friday	PROPN	NNP	Number=Sing	1	obl	1:obl:about	SpaceAfter=No
4	,	,	PUNCT	,	_	3	punct	3:punct	_
5	Sept.	September	PROPN	NNP	Abbr=Yes|Number=Sing	3	appos	3:appos	_
6	17	17	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	5:nummod	SpaceAfter=No
7	,	,	PUNCT	,	_	3	punct	3:punct	_
8	at	at	ADP	IN	_	10	case	10:case	_
9	9	9	NUM	CD	NumForm=Digit|NumType=Card	10	nummod	10:nummod	_
10	am	a.m.	NOUN	NN	Number=Sing	3	nmod	3:nmod:at|18:nsubj	_
11	(	(	PUNCT	-LRB-	_	13	punct	13:punct	SpaceAfter=No
12	Houston	Houston	PROPN	NNP	Number=Sing	13	compound	13:compound	_
13	time	time	NOUN	NN	Number=Sing	10	nmod:npmod	10:nmod:npmod	SpaceAfter=No
14	)	)	PUNCT	-RRB-	_	13	punct	13:punct	_
15	which	which	PRON	WDT	PronType=Rel	18	nsubj	10:ref	_
16	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	cop	18:cop	_
17	11	11	NUM	CD	NumForm=Digit|NumType=Card	18	nummod	18:nummod	_
18	am	a.m.	NOUN	NN	Number=Sing	10	acl:relcl	10:acl:relcl	_
19	(	(	PUNCT	-LRB-	_	23	punct	23:punct	SpaceAfter=No
20	Sao	Sao	PROPN	NNP	Number=Sing	21	compound	21:compound	_
21	Paulo	Paulo	PROPN	NNP	Number=Sing	23	compound	23:compound	SpaceAfter=No
22	)	)	PUNCT	-RRB-	_	23	punct	23:punct	_
23	time	time	NOUN	NN	Number=Sing	18	nmod:npmod	18:nmod:npmod	SpaceAfter=No
24	?	?	PUNCT	.	_	1	punct	1:punct	_
